2018MNRAS.474..662M

Query : 2018MNRAS.474..662M

2018MNRAS.474..662M - Mon. Not. R. Astron. Soc., 474, 662-676 (2018/February-2)

Probing the local environment of the supernova remnant HESS J1731-347 with CO and CS observations.

MAXTED N., BURTON M., BRAIDING C., ROWELL G., SANO H., VOISIN F., CAPASSO M., PUHLHOFER G. and FUKUI Y.

Abstract (from CDS):

The shell-type supernova remnant HESS J1731 - 347 emits TeV gamma-rays, and is a key object for the study of the cosmic ray acceleration potential of supernova remnants. We use 0.5-1 arcmin Mopra CO/CS(1-0) data in conjunction with H I data to calculate column densities towards the HESS J1731 - 347 region. We trace gas within at least four Galactic arms, typically tracing total (atomic+molecular) line-of-sight H column densities of 2-3x 1022 cm–2. Assuming standard X-factor values and that most of the H I/CO emission seen towards HESS J1731 - 347 is on the near-side of the Galaxy, X-ray absorption column densities are consistent with H I+CO-derived column densities foreground to, but not beyond, the Scutum-Crux Galactic arm, suggesting a kinematic distance of ∼3.2 kpc for HESS J1731 - 347. At this kinematic distance, we also find dense, infrared-dark gas traced by CS(1-0) emission coincident with the north of HESS J1731 - 347, the nearby H II region G353.43-0.37 and the nearby unidentified gamma-ray source HESS J1729 - 345. This dense gas lends weight to the idea that HESS J1729 - 345 and HESS J1731 - 347 are connected, perhaps via escaping cosmic-rays.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): cosmic rays - ISM: clouds - ISM: supernova remnants - gamma-rays: ISM

Simbad objects: 23

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Number of rows : 23
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1553 0
2 IC 443 SNR 06 17 00.0000000 +22 34 11.998901           ~ 1314 1
3 NAME Vela Jr SN SNR 08 52.0 -46 20           ~ 507 2
4 NAME Crux-Scutum Spiral Arm reg 12 30 -60.0           ~ 323 0
5 ESO 134-11 HII 14 40 29 -62 38.7           ~ 585 1
6 NAME Lupus SN SNR 15 02 22.1 -42 05 49           ~ 1407 1
7 SNR G338.3-00.0 SNR 16 40 43.2 -46 31 48           ~ 175 2
8 SNR G347.3-00.5 SNR 17 12 27 -39 41.2     12.27     ~ 761 1
9 HESS J1729-345 gam 17 28 58.43253 -34 31 35.8140           ~ 18 0
10 SSTGLMC G353.4039-00.0664 out 17 29 13.77744 -34 32 20.0292           ~ 5 0
11 GAL 353.38-00.11 HII 17 29 21.6 -34 35 04           ~ 7 0
12 GAL 353.56-00.01 HII 17 29 25.7 -34 22 56           ~ 4 0
13 GAL 353.43-00.37 ? 17 30 31.2425868792 -34 40 58.941812424           ~ 4 0
14 GAL 353.4-00.4 HII 17 30 31.4 -34 40 59           ~ 20 0
15 SNR G353.6-00.7 SNR 17 31 55.0 -34 42 36           ~ 172 0
16 XMMU J173203.3-344518 X 17 32 03.3 -34 45 18           ~ 40 0
17 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
18 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
19 SNR G006.4-00.1 SNR 18 00 31.2011719 -23 25 48.001099           ~ 782 1
20 SNR G034.6-00.5 SNR 18 56 10.650 +01 13 21.30           ~ 1034 2
21 NAME Sgr Arm PoG 19 00 -30.0           ~ 710 1
22 W 49b SNR 19 11 09.5 +09 06 21           ~ 500 1
23 NAME Norma-Cygnus Arm reg ~ ~           ~ 79 0

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